A manufacturing system for an electric vacuum device

Abstract

The present application relates to a kind of preparation systems for electric vacuum device, belong to neutron generator manufacturing technical field, solve the electric vacuum tube equipment cost high and floor area, first clamping unit or second clamping unit cannot be quickly disassembled, neutron generator or second neutron generator Manual assembly waste time, cannot be driven to the order of tube frame assembly, flaring assembly and tube lock ring, cannot be clamped to the charging and exhausting cylinder, and the charging and exhausting cylinder cannot be automatically flared.The preparation system of the present application includes main unit, preparation box and heating switching mechanism, the preparation box is arranged on the main unit, and the heating switching mechanism is arranged in the preparation box;The heating switching mechanism is used to switch the preparation method of electric vacuum device.The preparation system of the present application can not replace main unit and preparation box, only using heating switching mechanism can only use a set of device to prepare neutron tube of two methods, save equipment cost and floor area.

Description

Technical Field

[0001] This invention relates to the field of neutron generator manufacturing technology, and more specifically to a fabrication system for electro-vacuum devices. Background Technology

[0002] The vacuum electronic device in this application is a neutron generator or neutron tube. A neutron generator is an instrument that can emit a neutron beam. The neutron generator consists of a Penning ion source, a high-voltage resistant insulating and sealed shell, a target made of hydrogen isotope mixture, a suppression electrode, and a hydrogen isotope memory.

[0003] The fabrication of the neutron generator involves sequentially welding the Penning ion source, the high-voltage resistant insulating and sealed shell, and the target chamber to form a sealed whole. A target film is then fabricated on the inner surface of the target substrate inside the neutron generator, a hydrogen isotope storage device is installed, and finally, radioactive gas is introduced.

[0004] Currently, there are two approaches to manufacturing neutron generators: the neutron tube end cooling method and the neutron tube end heating method. Because the heating / cooling methods used are different, different complete sets of manufacturing equipment are required, resulting in high equipment costs and large footprints. Summary of the Invention

[0005] To address the aforementioned shortcomings of existing technologies, this invention provides a fabrication system for electro-vacuum devices. This system solves several problems in existing technologies, including: different heating / cooling methods used in different neutron tube manufacturing processes require different manufacturing equipment, resulting in high equipment costs and large footprints; potential hydrogen isotope leakage; inability to quickly assemble or disassemble the first or second clamping unit; time-consuming manual assembly of the neutron generator or second neutron generator; inability to sequentially drive the tube support assembly, flaring assembly, and tube locking ring; inability to clamp the filling / exhaust cylinder; and the inability to automatically flare the filling / exhaust cylinder.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows: A fabrication system for vacuum electronic devices includes a main unit, a fabrication chamber, and a heating switching mechanism. The fabrication chamber is mounted on the main unit, and the heating switching mechanism is located inside the fabrication chamber. The heating switching mechanism is used to switch the fabrication method of the vacuum electronic devices.

[0007] Furthermore, the preparation box includes a preparation cavity.

[0008] Furthermore, the heating switching mechanism is either a first clamping unit or a second clamping unit.

[0009] Furthermore, the first clamping unit includes a clamping seat and a cooler, the clamping seat being disposed on the inner wall of the bottom of the preparation cavity, and the cooler being disposed on the clamping seat.

[0010] Furthermore, the second clamping unit includes a clamping base, a cooler, and a second heater, with the second heater disposed on the clamping base.

[0011] Furthermore, the preparation box also includes a retaining post, which is disposed on the inner wall at the bottom end of the preparation cavity.

[0012] Furthermore, the preparation box also includes a locking block, which is disposed on the inner wall at the bottom end of the preparation cavity.

[0013] Furthermore, the first clamping unit also includes a quick-release assembly, which is disposed on the clamping base.

[0014] Furthermore, the neutron generator includes a tube body and a filling and exhaust cylinder; the tube body includes a base section and a gas film section, and the base section is connected to the filling and exhaust cylinder.

[0015] Furthermore, it also includes a filling and venting unit, which is disposed on the main unit and passes through the preparation box, and can be connected to the filling and venting cylinder.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: (1) In order to solve the problem that different heating / cooling methods are used for different manufacturing methods of neutron tubes, different manufacturing equipment is required, resulting in high equipment costs and large floor space, the preparation system of the present invention can prepare neutron tubes of two methods with only one set of equipment without changing the main unit and preparation box, using only the heating switching mechanism, thus saving equipment costs and floor space. (2) In order to solve the problem of possible leakage of hydrogen isotopes, the filling and emptying unit of the present invention forms an internal vacuum environment inside the neutron generator, while the preparation box forms an external vacuum environment; if leakage occurs in the internal vacuum environment, the external vacuum environment can still maintain a high vacuum level and confine the leaked radioactive gas inside the preparation box, preventing the radioactive gas from leaking to the external environment, thereby improving operational safety. (3) In order to solve the problem that the first clamping unit or the second clamping unit cannot be quickly assembled or disassembled, the control rod of the present invention slides along the axial direction of the control groove, which can drive the control block to abut against the elastic sheet, and the bolt can maintain the state of inserting the block, preventing the clamping seat from separating from the preparation cavity, and maintaining the connection between the first clamping unit or the second clamping unit and the preparation box; the control rod continues to slide along the axial direction of the control groove, which can drive the control block to separate from the elastic sheet, and the bolt can slide in the direction of the control rod, and then retract into the bolt groove of the clamping seat, releasing the lock on the block, thereby realizing the quick unlocking and separation of the clamping seat; (4) In order to solve the problem of being unable to transmit power sequentially to the pipe rack assembly, the flaring assembly and the pipe locking ring, the main shaft of the present invention rotates, the first rotating block engages with the first transmission bar and transmits the rotation to the pipe rack assembly; then, the second rotating block engages with the second transmission bar and transmits the rotation to the flaring assembly; finally, the third rotating block engages with the third transmission bar and transmits the rotation to the pipe locking ring; through the above transmission coordination, the components are realized to operate in a preset order, ensuring the continuity of the clamping, flaring and locking processes; (5) In order to solve the problem of not being able to clamp the inflation / exhaust cylinder, the pipe clamp of the present invention is a round pipe, and the inflation / exhaust cylinder can be inserted into the pipe clamp; the end of the pipe clamp is provided with multiple circumferentially distributed claws, the outer wall of the claws is provided with external threads, and the pipe clamp ring is provided with internal threads. When the pipe clamp ring is tightened, the internal threads and external threads cooperate to drive the claws to contract radially, thereby clamping the inflation / exhaust cylinder and preventing the inflation / exhaust cylinder from axially displacing. (6) In order to solve the problem that the filling and exhaust cylinder cannot automatically expand, the fixed distance screw block of the present invention rotates, thereby driving the adjusting distance screw and the hook to move along the axial direction of the adjusting distance screw, and pulling the filling and exhaust head towards the end of the filling and exhaust cylinder, so that the filling and exhaust head tightly abuts against and inserts into the pipe opening of the filling and exhaust cylinder, and automatically expands the inner diameter of the pipe opening of the filling and exhaust cylinder to form a trumpet-shaped flared structure.

[0017] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the specification or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the content specifically pointed out in the text and drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the preparation system; Figure 2 A schematic diagram of the overall structure of the pipe rack assembly, the flare assembly, and the pipe locking ring; Figure 3 This is a schematic diagram of the overall structure of the first clamping unit; Figure 4 This is a schematic diagram of the overall structure of the second clamping unit; Figure 5 This is a schematic diagram of the overall structure of the quick-release assembly; Figure 6 This is a schematic diagram of the overall structure of the sequence lock component; Figure 7 This is an exploded structural diagram of the pipe rack assembly, flare assembly, and pipe locking ring.

[0019] Figure label: 1-Main unit; 2-Truss; 3-Preparation chamber; 31-Insulation cover; 32-Preparation cavity; 33-First heater; 34-Box lock; 35-Clamping post; 36-Clamping block; 4-Charging / Exhausting unit; 41-Charging / Exhausting main pipe; 42-Charging / Exhausting head; 43-Locking protrusion; 5-First clamping unit; 6-Second clamping unit; 51-Clamping seat; 52-Quick release assembly; 521-Pin post; 522-Elastic plate; 523-Control lever; 524-Control block; 525-Control lever spring; 53-Pipe support assembly; 531-Pipe clamp; 532-Pipe clamp ring; 54-Flanging assembly; 541-Hook hook; 542-Adjusting screw; 543-Fixed screw block; 55-Pipe locking ring; 56-Sequence lock assembly; 561-Main shaft; 562-First rotating block; 563-Second rotating block; 564-Third rotating block; 565-First transmission bar; 566-Second transmission bar; 567-Third transmission bar; 568-Transmission gear; 57 - Boss; 571 - First sub-platform; 572 - Second sub-platform; 573 - Third sub-platform; 58-Control components; 581-Drive shaft; 582-Main drive wheel; 583-Lever; 584-Steering wheel; 61-Cooler; 62-Second heater; 100 - Neutron generator; 101 - Tube body; 102 - Inlet / outlet cylinder. Detailed Implementation

[0020] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0021] Example 1: To address the issue that different heating / cooling methods used in different neutron tube manufacturing processes require different manufacturing equipment, resulting in high equipment costs and large footprints, a specific embodiment of the present invention is provided, such as... Figure 1As shown, a fabrication system for vacuum electronic devices (hereinafter referred to as the fabrication system) includes a main unit 1, a fabrication chamber 3, and a heating switching mechanism. The fabrication chamber 3 is mounted on the main unit 1, and the heating switching mechanism is located inside the fabrication chamber 3. The fabrication chamber 3 is used to generate vacuum and high temperature. The heating switching mechanism is used to switch between two fabrication methods. This embodiment of the fabrication system can fabricate neutron tubes using both methods with a single set of equipment without replacing the main unit 1 and the fabrication chamber 3, relying solely on the heating switching mechanism, thus saving equipment costs and floor space.

[0022] Preferably, the preparation system of this embodiment further includes a truss 2, which is disposed on the main unit 1 or the preparation box 3. The preparation box 3 includes an insulating cover 31, which is disposed on the truss 2 and is slidable along the truss 2.

[0023] Preferably, the preparation chamber 3 further includes a preparation cavity 32. An insulating cover 31 is used to seal the preparation cavity 32. The preparation chamber 3 also includes a first heater 33, which is disposed on the inner wall of the preparation cavity 32 and used to heat the interior of the preparation chamber 3. The preparation chamber 3 also includes a lock 34, which is disposed on the outer wall of the preparation cavity 32 and used to seal the insulating cover 31 to the preparation cavity 32. Multiple locks 34 are provided, each including a lock body and a screw, which are threadedly connected. A lug is provided on the side of the insulating cover 31. The screw can pass through the lug and rotate to abut against the lug, thereby locking the insulating cover 31 to the preparation chamber 3.

[0024] The vacuum level of preparation chamber 3 can reach 2×10⁻⁶. -5 Pa, the maximum heating temperature of the preparation chamber 3 is 600℃, and it is used for workpiece baking and degassing; the vacuum degree of the charging and degassing unit 4 can reach 2×10 -7 Pa; the temperature control range of the suppression unit 7 is -30℃ to 200℃, ensuring that the temperature of the air film section does not exceed 180℃ throughout the entire process.

[0025] Preferably, the main unit 1 is an oil-free ultra-high vacuum system, which includes a main pump, a high vacuum pump, a backing pump, and vacuum valves. The main pump is an ion pump, and the high vacuum pump is a molecular pump. The oil-free pump is a pumping unit; the dry mechanical pump is the backing pump; the grease-lubricated molecular pump is the main pump; and the ion pump is the ultra-high vacuum maintenance pump.

[0026] like Figure 2As shown, the neutron generator 100 to be prepared according to the present invention includes a tube body 101 and a filling and exhaust cylinder 102. The tube body 101 includes a substrate section and a gas film section, and the substrate section is connected to the filling and exhaust cylinder 102. For the "end cooling scheme", the preparation chamber 32 needs to be heated to 600°C, while the gas film section is required to maintain a temperature below 160°C; for the "end heating scheme", the preparation chamber 32 needs to be heated to 600°C, then the first heater 33 is turned off, the preparation chamber 32 is cooled down, and then the substrate section is heated to 400°C, while the gas film section is required to maintain a temperature below 160°C. A gas bladder is provided inside the gas film section. The gas bladder of the neutron generator 100 is kept hollow, and the preparation chamber 3 can perform vacuum purification of the neutron generator 100 at 600°C. At this time, there are no hydrogen isotopes in the neutron generator 100, which prevents the gas from escaping from the target film and prevents the neutron generator from failing.

[0027] Furthermore, in order to address the potential leakage of hydrogen isotopes, such as Figure 1 As shown, the preparation system of this embodiment also includes a filling and venting unit 4, which is disposed on the main unit 1 and passes through the preparation chamber 3, and can be connected to the filling and venting cylinder 102 of the neutron generator 100. The filling and venting unit 4 can vent and evacuate the neutron generator 100, and then fill the neutron generator 100 with radioactive working gas. The preparation system of this embodiment is provided with an inner and outer vacuum environment. The filling and venting unit 4 forms the inner vacuum environment inside the neutron generator 100, while the preparation chamber 3 forms the outer vacuum environment. If a leak occurs in the inner vacuum environment, the outer vacuum environment can still maintain a high vacuum level and confine the leaked radioactive gas inside the preparation chamber 3, preventing the radioactive gas from leaking into the external environment, thereby improving operational safety.

[0028] Specifically, the heating switching mechanism is either the first clamping unit 5 or the second clamping unit 6. The first clamping unit 5 is used to implement the "end cooling scheme", and the second clamping unit 6 is used to implement the "end heating scheme". By simply switching between the first clamping unit 5 and the second clamping unit 6, it is possible to use only one set of equipment to prepare neutron tubes using two different methods, thus saving equipment costs and floor space.

[0029] Preferably, such as Figure 3 and Figure 4 As shown, the first clamping unit 5 includes a clamping base 51 and a cooler 61. The clamping base 51 is disposed on the inner wall of the bottom of the preparation chamber 32, and the cooler 61 is disposed on the clamping base 51. The cooler 61 is used to maintain the temperature of the gas film section below 160°C. The second clamping unit 6, based on the first clamping unit 5, further includes a second heater 62, which is disposed on the clamping base 51. The second heater 62 is used to heat the substrate section to 400°C.

[0030] Furthermore, in order to solve the problem that the first clamping unit 5 or the second clamping unit 6 cannot be quickly assembled and disassembled, such as... Figure 3 and Figure 5 As shown, the preparation box 3 also includes a locking post 35 and a locking block 36, both of which are disposed on the inner wall of the bottom end of the preparation cavity 32. The first clamping unit 5 also includes a quick-release assembly 52. ​​The quick-release assembly 52 is disposed on the clamping base 51 and is used to quickly connect and disconnect the first clamping unit 5 or the second clamping unit 6 from the preparation box 3.

[0031] Preferably, the quick-release assembly 52 includes an arc-shaped slot, which is disposed on the outer wall of the end of the clamping base 51. The arc-shaped slot is used to engage with the clamping post 35, and the clamping base 51 can rotate around the clamping post 35. The quick-release assembly 52 can be inserted into the insertion slot of the clamping block 36, thereby realizing the quick locking and unlocking of the clamping base 51 and the preparation cavity 32.

[0032] Preferably, the quick-release assembly 52 further includes a bolt 521, an elastic piece 522, and a control rod 523. The bolt 521 is slidably connected in the bolt groove of the clamping seat 51, the elastic piece 522 is disposed on the clamping seat 51, and the control rod 523 is disposed in the control groove of the clamping seat 51. The control rod 523 is provided with a control block 524, which can slide axially along the control block groove of the clamping seat 51. One side of the elastic piece 522 abuts against the bolt 521, and the other side of the elastic piece 522 abuts against the control block 524. The elastic piece 522 provides elastic force to the bolt 521, keeping the bolt 521 protruding from the outer wall of the clamping seat 51 to achieve insertion and locking with the locking block 36. The end face of the bolt 521 is an arc surface or a bevel. The control rod 523 slides along the axial direction of the control groove, which can drive the control block 524 to abut against the elastic sheet 522. The bolt 521 can maintain the state of inserting the locking block 36, preventing the clamping seat 51 from disengaging from the preparation cavity 32 and maintaining the connection between the first clamping unit 5 or the second clamping unit 6 and the preparation box 3. The control rod 523 continues to slide along the axial direction of the control groove, which can drive the control block 524 to disengage from the elastic sheet 522. The bolt 521 can slide in the direction of the control rod 523, and then retract into the bolt groove of the clamping seat 51, releasing the lock on the locking block 36, thereby realizing the quick unlocking and separation of the clamping seat 51.

[0033] Preferably, the quick-release assembly 52 further includes a control lever spring 525, which is disposed in the control groove. One end of the control lever spring 525 is connected to the control lever 523, and the other end of the control lever spring 525 is connected to the control groove. The control lever spring 525 is used to provide a reset force to the control lever 523, so that the control block 524 remains in contact with the elastic plate 522, ensuring that the bolt 521 is always in the extended state to maintain locking when no external force is applied, thereby ensuring the stability and safety of the clamping unit during operation.

[0034] In use, the operator first places the clamping seat 51 of the first clamping unit 5 or the second clamping unit 6 on the bottom inner wall of the preparation cavity 32, and engages the arc-shaped slot with the locking post 35. Then, the operator pushes the control rod 523 to make the clamping seat 51 rotate around the locking post 35 until the locking post 521 is aligned with the insertion slot of the locking block 36. After releasing the control rod 523, under the return force of the control rod spring 525, the control rod 523 drives the control block 524 to reset and abut against the elastic plate 522. The elastic plate 522 pushes the locking post 521 to extend and insert into the insertion slot of the locking block 36, completing the quick locking of the clamping seat 51 and ensuring that the first clamping unit 5 or the second clamping unit 6 is firmly connected to the preparation cavity 32. When disassembly is required, the operator pulls the control lever 523, the control block 524 disengages from the elastic plate 522 and abuts against the control block groove, the clamping seat 51 is pulled and rotated, the bolt 521 can disengage from the insertion groove of the locking block 36 and retract into the bolt groove of the clamping seat 51, the locking state is released, and the clamping seat 51 can be taken out from the preparation cavity 32, realizing the quick disassembly and replacement of the first clamping unit 5 or the second clamping unit 6.

[0035] Preferably, the preparation system of this embodiment further includes a glove box (not shown in the figure), and the main unit 1, truss 2, preparation box 3, filling and venting unit 4, first clamping unit 5 and second clamping unit 6 are all disposed inside the glove box. The glove box is used to prevent radioactive working gas from leaking into the atmosphere.

[0036] Compared to existing technologies, the preparation system of this embodiment can prepare neutron tubes using two different methods with only one device, without replacing the main unit 1 and the preparation chamber 3, using only the heating switching mechanism, thus saving equipment costs and floor space. The control rod 523 slides along the axial direction of the control groove, which can drive the control block 524 to abut against the elastic sheet 522. The bolt 521 can maintain the state of the inserted locking block 36, preventing the clamping seat 51 from disengaging from the preparation cavity 32 and maintaining the connection between the first clamping unit 5 or the second clamping unit 6 and the preparation chamber 3. If the control rod 523 continues to slide along the axial direction of the control groove, it can drive the control block 524 to disengage from the elastic sheet 522. The bolt 521 can slide towards the direction of the control rod 523 and then retract into the bolt groove of the clamping seat 51, releasing the lock on the locking block 36, thereby realizing the rapid unlocking and separation of the clamping seat 51. The inflation and deflation unit 4 of the preparation system of this embodiment forms an internal vacuum environment inside the neutron generator 100, while the preparation chamber 3 forms an external vacuum environment. If a leak occurs in the internal vacuum environment, the external vacuum environment can still maintain a high degree of vacuum and confine the leaked radioactive gas inside the preparation chamber 3, preventing the radioactive gas from leaking into the external environment, thereby improving operational safety.

[0037] Example 2: To address the problem of cumbersome and time-consuming operation caused by manually pressing the end of the filling / exhausting cylinder 102 into a flared shape before assembling the neutron generator 100 onto the first clamping unit 5 to ensure a tight fit with the sealing interface of the filling / exhausting unit 4, followed by manual clamping and locking of the filling / exhausting cylinder 102 and the filling / exhausting unit 4, the following steps are taken: Figure 3 As shown, this embodiment improves upon the first embodiment by adding a pipe rack assembly 53, a flaring assembly 54, a pipe locking ring 55, and a sequence locking assembly 56. The operator can complete the clamping, flaring, and sealing locking actions in one go with just one gesture, without the need for additional tools or multiple adjustments.

[0038] Specifically, the first clamping unit 5 also includes a boss 57, which is disposed on the outer wall of the clamping base 51. The tube support assembly 53 is disposed on the boss 57, and the flaring assembly 54 and the sequence lock assembly 56 are both disposed on the clamping base 51. When the sequence lock assembly 56 rotates, it can sequentially drive the tube support assembly 53, the flaring assembly 54 and the tube lock ring 55 to rotate, thereby completing the clamping of the neutron generator 100, the flaring of the end of the filling and exhaust tube 102 and the sealing and locking action between the filling and exhaust tube 102 and the filling and exhaust unit 4 in one go, without the need for additional tools or multiple adjustments.

[0039] Preferably, such as Figure 5 and Figure 6 As shown, the boss 57 includes a first sub-platform 571, a second sub-platform 572, and a third sub-platform 573. The sequence lock assembly 56 includes a main shaft 561, a first rotating block 562, a second rotating block 563, and a third rotating block 564, which are arranged sequentially at intervals along the axial direction of the main shaft 561. The two ends of the main shaft 561 are rotatably connected to the second sub-platform 572 and the third sub-platform 573, respectively. The first rotating block 562, the second rotating block 563, and the third rotating block 564 are all fan-shaped structures, and gear teeth are provided on the outer circumferential surfaces of the first rotating block 562, the second rotating block 563, and the third rotating block 564.

[0040] Furthermore, to address the issue of the inability to sequentially drive the pipe rack assembly 53, the flaring assembly 54, and the pipe locking ring 55, a transmission groove is provided on the first substation 571. The sequential locking assembly 56 also includes a first transmission bar 565, a second transmission bar 566, and a third transmission bar 567. All three transmission bars are racks and pinions, passing through the transmission groove and capable of sliding along their lengths within the groove. One end of the first transmission bar 565 engages with the first rotating block 562, and the other end engages with the pipe rack assembly 53. One end of the second transmission bar 566 engages with the second rotating block 563, and the other end engages with the flaring assembly 54. One end of the third transmission bar 567 engages with the third rotating block 564, and the other end engages with the pipe locking ring 55. When the main spindle 561 rotates, the first rotating block 562 engages with the first transmission bar 565, transmitting rotation to the pipe support assembly 53. Then, the second rotating block 563 engages with the second transmission bar 566, transmitting rotation to the flaring assembly 54. Finally, the third rotating block 564 engages with the third transmission bar 567, transmitting rotation to the pipe locking ring 55. Through this transmission coordination, the components operate sequentially according to a preset order, ensuring the continuity of the clamping, flaring, and locking processes.

[0041] Preferably, in order to achieve separate transmission of the first rotating block 562, the second rotating block 563 and the third rotating block 564, the projections of the first rotating block 562, the second rotating block 563 and the third rotating block 564 in the axial direction of the main shaft 561 do not intersect, thereby avoiding mutual interference between the pipe rack assembly 53, the flaring assembly 54 and the pipe locking ring 55.

[0042] Furthermore, in order to solve the problem of not being able to clamp the inflation / exhaust cylinder 102, such as... Figure 2 and Figure 7 As shown, the pipe support assembly 53 includes a pipe clamp 531 and a pipe clamp ring 532. The pipe clamp 531 is fixedly mounted on the first sub-platform 571. The pipe clamp 531 is a round pipe, and the inflation / exhaust cylinder 102 can be inserted into the pipe clamp 531. The end of the pipe clamp 531 is provided with multiple circumferentially distributed jaws, and the outer wall of the jaws is provided with external threads. The pipe clamp ring 532 is provided with internal threads. When the pipe clamp ring 532 is tightened, the internal threads and external threads cooperate to drive the jaws to contract radially, thereby clamping the inflation / exhaust cylinder 102 and preventing the inflation / exhaust cylinder 102 from undergoing axial displacement.

[0043] Preferably, the inner wall surface of the gripper is provided with anti-slip texture to increase the friction between the gripper and the inflation / extension cylinder 102 and prevent the inflation / extension cylinder 102 from slipping during the expansion or locking process.

[0044] Preferably, the outer wall of the pipe clamp ring 532 is provided with a plurality of circumferentially distributed ring drive teeth, which can mesh with the first drive bar 565, thereby transmitting the rotation of the main shaft 561 to the pipe clamp ring 532 and driving the pipe clamp ring 532 to rotate to achieve the clamping or loosening of the inflation / extension cylinder 102.

[0045] Preferably, the filling and venting unit 4 includes a filling and venting main pipe 41 and a filling and venting head 42. The filling and venting head 42 is disposed at the end of the filling and venting main pipe 41 and is used to communicate with the filling and venting cylinder 102 to inject radioactive working gas. The filling and venting head 42 is a conical pipe head.

[0046] Furthermore, to address the issue of the inability of the inflation / exhaust pipe 102 to automatically flare, the flaring assembly 54 includes a hook 541, an adjusting screw 542, and a fixed-distance screw block 543. One end of the adjusting screw 542 is connected to the hook 541, and the other end passes through the fixed-distance screw block 543 and is threadedly connected to it. The fixed-distance screw block 543 is positioned in the nut groove of the clamping seat 51. The hook 541 can be hooked and connected to the inflation / exhaust main pipe 41 or the inflation / exhaust head 42. The outer wall of the fixed-distance screw block 543 is provided with fixed-distance screw block drive teeth, which can mesh with the second drive bar 566. The main shaft 561 rotates, and the second rotating block 563 drives the second transmission bar 566 to slide along the length direction, thereby driving the fixed distance screw block 543 to rotate, which in turn drives the adjusting screw 542 and the hook 541 to move along the axial direction of the adjusting screw 542, and pulls the filling and exhaust head 42 toward the end of the filling and exhaust cylinder 102, so that the filling and exhaust head 42 tightly abuts against and inserts into the opening of the filling and exhaust cylinder 102, and automatically expands the inner diameter of the opening of the filling and exhaust cylinder 102 to form a flared structure in the shape of a trumpet.

[0047] Furthermore, to address the issue of the inability to form a tight, airtight connection between the inflation / deflation head 42 and the inflation / deflation cylinder 102, the inflation / deflation unit 4 also includes a locking protrusion 43, which is disposed on the outer wall of the inflation / deflation head 42. A pipe locking ring 55 is fitted onto the outer wall of the pipe clamp 531. The pipe locking ring 55 is a tubular clamp, and its inner wall has a locking groove (not shown in the figure) that mates with the locking protrusion 43. After the inflation / deflation head 42 is inserted into the inflation / deflation cylinder 102 and flared, the pipe locking ring 55 can be fitted onto the outer wall of the inflation / deflation head 42; when the pipe locking ring 55 rotates, the locking protrusion 43 can engage in the locking groove, thereby both restricting the axial displacement of the inflation / deflation head 42, keeping it stable during inflation, and forming a tight, airtight connection between the inflation / deflation head 42 and the inflation / deflation cylinder 102.

[0048] Preferably, the outer wall of the tube lock ring 55 is provided with tube lock ring drive teeth, which can mesh with the third drive bar 567. When the main shaft 561 rotates, the third rotating block 564 drives the third drive bar 567 to slide along the length direction, thereby driving the tube lock ring 55 to rotate, and the locking protrusion 43 is engaged in the locking groove, realizing the automatic locking of the tube lock ring 55 to the charging and discharging head 42.

[0049] Furthermore, regarding the problem of the main spindle 561 requiring significant effort to rotate, preferably, as follows: Figure 4 As shown, a transmission gear 568 is also provided at the end of the main shaft 561. The first clamping unit 5 also includes a control component 58, which assists the operator in transmitting manual operation to the transmission gear 568 to reduce the operating resistance of the main shaft 561. Specifically, the control component 58 includes a drive shaft 581, a main drive wheel 582, a lever 583, and a steering wheel 584. The drive shaft 581 and the steering wheel 584 are rotatably mounted on the second sub-platform 572. The lever 583 and the main drive wheel 582 are both mounted on the drive shaft 581. The main drive wheel 582 can mesh with the transmission gear 568 through the steering wheel 584, converting the rotational motion of the drive shaft 581 into the rotation of the transmission gear 568, thereby driving the main shaft 561 to rotate. The diameter of the main drive wheel 582 is larger than the diameter of the transmission gear 568, thus forming a transmission ratio of speed reduction and torque increase, allowing the operator to drive the main shaft 561 to rotate with a smaller torque, reducing the difficulty of operation.

[0050] Compared to Embodiment 1, the first clamping unit 5 in this embodiment adds a pipe support assembly 53, a flaring assembly 54, a pipe locking ring 55, and a sequence locking assembly 56. The operator only needs one pressing action to complete the clamping, flaring, and sealing locking actions in one go, without the need for additional tools or multiple adjustments. The rotation of the sequence locking assembly 56 sequentially drives the pipe support assembly 53, the flaring assembly 54, and the pipe locking ring 55 to rotate, completing the clamping of the neutron generator 100, the flaring of the end of the filling / exhausting cylinder 102, and the sealing locking of the filling / exhausting cylinder 102 with the filling / exhausting unit 4 in one go, without the need for additional tools. Multiple adjustments may be made; as the main shaft 561 rotates, the first rotating block 562 engages with the first transmission bar 565 and transmits the rotation to the pipe support assembly 53; then, the second rotating block 563 engages with the second transmission bar 566 and transmits the rotation to the flaring assembly 54; finally, the third rotating block 564 engages with the third transmission bar 567 and transmits the rotation to the pipe locking ring 55; through the above transmission coordination, each component operates in a preset order, ensuring the continuity of the clamping, flaring, and locking processes; the pipe clamp 531 is a round pipe, and the inflation / exhaust cylinder 102 can be inserted into the pipe clamp 531. The end of the pipe clamp 531 is provided with multiple circumferentially distributed jaws. The outer wall of the jaws is provided with external threads, and the pipe clamp ring 532 is provided with internal threads. When the pipe clamp ring 532 is tightened, the internal threads and external threads cooperate to drive the jaws to contract radially, thereby clamping the inflation / exhaust cylinder 102 and preventing the inflation / exhaust cylinder 102 from axially displacing. The main shaft 561 rotates, and the second rotating block 563 drives the second transmission bar 566 to slide along the length direction, thereby driving the fixed distance screw block 543 to rotate, thereby driving the adjusting screw 542 and the hook 541 to move along the axial direction of the adjusting screw 542, and pulling the inflation / exhaust head 42 toward the end of the inflation / exhaust cylinder 102, so that the inflation / exhaust head 42 tightly abuts against and inserts into the pipe opening of the inflation / exhaust cylinder 102, and automatically expands the inner diameter of the pipe opening of the inflation / exhaust cylinder 102 to form a flared structure in the shape of a trumpet.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A fabrication system for electrovacuum devices, characterized in that, It includes a main unit (1), a preparation box (3) and a heating switching mechanism. The preparation box (3) is disposed on the main unit (1) and the heating switching mechanism is disposed inside the preparation box (3). The heating switching mechanism is used to switch the preparation method of the vacuum electronic device.

2. The fabrication system for electrovacuum devices according to claim 1, characterized in that, The preparation box (3) includes a preparation cavity (32).

3. The fabrication system for electro-vacuum devices according to claim 2, characterized in that, The heating switching mechanism is either a first clamping unit (5) or a second clamping unit (6).

4. The fabrication system for electro-vacuum devices according to claim 3, characterized in that, The first clamping unit (5) includes a clamping seat (51) and a cooler (61). The clamping seat (51) is disposed on the inner wall of the bottom of the preparation cavity (32), and the cooler (61) is disposed on the clamping seat (51).

5. The fabrication system for electro-vacuum devices according to claim 3, characterized in that, The second clamping unit (6) includes a clamping base (51), a cooler (61), and a second heater (62), the second heater (62) being disposed on the clamping base (51).

6. The fabrication system for electro-vacuum devices according to claim 2, characterized in that, The preparation box (3) also includes a retaining post (35), which is disposed on the inner wall at the bottom end of the preparation cavity (32).

7. The fabrication system for electro-vacuum devices according to claim 2, characterized in that, The preparation box (3) also includes a locking block (36), which is disposed on the inner wall at the bottom end of the preparation cavity (32).

8. The fabrication system for electro-vacuum devices according to claim 4, characterized in that, The first clamping unit (5) further includes a quick-release assembly (52), which is disposed on the clamping base (51).

9. The fabrication system for electro-vacuum devices according to claim 1, characterized in that, The neutron generator (100) includes a tube body (101) and an air filling and exhaust cylinder (102); the tube body (101) includes a base section and a gas film section, and the base section is connected to the air filling and exhaust cylinder (102).

10. The fabrication system for an electrovacuum device according to claim 9, characterized in that, It also includes an air filling and exhaust unit (4), which is disposed on the host unit (1) and passes through the preparation box (3), and can be connected to the air filling and exhaust cylinder (102).

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